I checked it out real quick because it actually looked pretty presentable/useful for other folks (I have 0 debt, literally, not even a quarter to a co-worker now). Playing with the test account, there's no way to view the annual interest rate for cards after you've entered them, or a way to change the interest rates. I tried and tried. Also, it's unintuitive to provide options in the edit card screen that weren't there for the initial creation, but to not display fields that were there for the initial creation.